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- Giving appropriate examples, explain how the two types of processes of adsorption (physisorption and chemisorption) are influenced by the prevailing temperature, the surface area of the adsorbent and the activation energy of the process?The rate of adsorption increases by; А. В. Increasing the temperature of the Increasing the pHof the adsorption medium adsorption medium C. D. Increasing the molecular size of the adsorbed Increasing the surface area of the adsorbent species1. What is/are the applications of the following adsorption isotherm models and their limitations? a. Langmuir b. BET
- One statement related to adsorption is not true. A. В. Physical adsorption Chemical adsorption requires low energy requires high energy С. D. Bonding due to adsorption is exothermic process Bonding due to adsorption is endothermic processn gravimetric analysis unwanted material gets precipitated along with the required product. Adsorption and Absorption are two processes that can brings this about. Which of the following statement is correct: Select one: O a. Adsorption means attachment to the surface and Absorption means penetration beyond the surface to the inside O b. Adsorption and Absorption both occur at the surface of the precipitate C. Adsorption means penetration beyond the surface to the inside while Absorption means adhering to the surface O d. All of the above e. Adsorption means attachment to the surface and Absorption refer to interaction of light with matter Next page to searchThe enthalpy of adsorption of NH3 on Cu metal is found to be -200kJ/mole. The lifetime of NH3 molecule on Cu metal surface at 600K is? 200 s 2583 s 3.87x10^-32 s 40x10^-14 s
- n gravimetric analysis unwanted material gets precipitated along with the required product. Adsorption and Absorption are two processes that can brings this about. Which of the following statement is correct: Select one: O a. All of the above O b. Adsorption means attachment to the surface and Absorption refer to interaction of light with matter O cAdsorption means penetration beyond the surface to the inside while Absorption means adhering to the surface O d. Adsorption and Absorption both occur at the surface of the precipitate e. Adsorption means attachment to the surface and Absorption means penetration beyond the surface to the inside1. What is/are the applications of the following adsorption isotherm models and their limitations? a. Temkin b. FreundlichCalculate the activation energy for vacancy formatiın in Aluminuim, given that theequibilirium number of vacancies 500 C is 7.57x1023 m-3. The atomic weigth and density (500C) for aluminium are, respectively, 26.98 g/mol and 2.62 g/cm3.
- 2. Initial concentration of SAS solution equals to 0.44 mol/dm³. After adsorption of SAS from 60 cm³ of aqueous the concentration of SAS decreased up to 0.35 mol/dm³. The mass of adsorbent equals to 3 grams. Calculate the adsorption value (mol/g).1. What is the difference between the Freundlich and Langmuir isotherm models in adsorption? 2. What is the difference between Pseudo-First Order and Pseudo-Second Order of kinetics?What is an adsorption isotherm? Describe Freundlich adsorption isotherm.